HP Pavilion Dv4 1200 Entertainment Notebook Pc Series Manual

							2.Remove the cable from the base enclosure clips (2).
Reverse the preceding procedure to install the modem module cable.
Component replacement procedures 113 
						

							Fan and heat sink
DescriptionSpare part number
Heat sink (includes thermal material) 
●For use in models with Intel processors UMA graphics subsystems486838-001
●For use in models with AMD processors and UMA graphics subsystems492260-001
Fan (includes thermal material) 486844-001
NOTE:To properly ventilate the computer, allow at least a 7.6-cm (3-inch) clearance on the right side
and rear panel of the computer. The computer uses an electric fan for ventilation. The fan is controlled
by a temperature sensor and is designed to turn on automatically when high temperature conditions
exist. These conditions are affected by high external temperatures, system power consumption, power
management/battery conservation configurations, battery fast charging, and software requirements.
Exhaust air is displaced through the ventilation grill located on the left side of the computer.
Before removing the fan and heat sink assemblies, follow these steps:
1.Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the
computer on, and then shut it down through the operating system.
2.Disconnect all external devices connected to the computer.
3.Disconnect the power from the computer by first unplugging the power cord from the AC outlet and
then unplugging the AC adapter from the computer.
4.Remove the battery (see 
Battery on page 55).
5.Remove the following components:
a.Hard drive (see 
Hard drive on page 59)
b.Optical drive (see 
Optical drive on page 57)
c.Keyboard (see 
Keyboard on page 72)
d.Keyboard cover (see 
Keyboard cover on page 74)
e.Display assembly (see 
Display assembly on page 80)
f.Top cover (see 
Top cover on page 92)
g.System board (see 
System board on page 107)
Remove the fan:
1.Turn the system board upside down with the front toward you.
2.Remove the two Phillips PM2.5×4.0 screws (1) securing the fan to the system board.
114 Chapter 4   Removal and replacement procedures 
						

							3.Lift the fan up (2) to remove.
4.If it is necessary to replace the heat sink, select the section following that relates to the correct
system board.
Heat sink assembly for discrete graphics system
1.Loosen the four Phillips PM2.0×10.0 captive screws (1) that secure the heat sink assembly to the
system board.
NOTE:Due to the adhesive quality of the thermal material located between the fan/heat sink
assembly and system board components, it may be necessary to move the fan/heat sink assembly
from side to side to detach the assembly.
2.Remove the fan/heat sink assembly (2).
NOTE:Each time the fan and heat sink are removed, the thermal material must be thoroughly cleaned
from the surfaces of the heat sink and system board components: heat sink (1), processor (2), heat
sink (3), Northbridge clip (4), nVidia video chip (5), and capacitors (6). Thermal pads and thermal paste
must be installed on all surfaces before the fan and heat sink are reinstalled. Thermal pads and thermal
paste are included with all fan, heat sink, system board, and processor spare part kits.
Component replacement procedures 115 
						

							Reverse this procedure to install the fan/heat sink assembly.
Heat sink assembly for UMA graphics system
1.Loosen the four Phillips PM2.0×10.0 captive screws (1) that secure the heat sink assembly to the
system board.
NOTE:Due to the adhesive quality of the thermal material located between the fan/heat sink
assembly and system board components, it may be necessary to move the fan/heat sink assembly
from side to side to detach the assembly.
2.Remove the fan/heat sink assembly (2).
NOTE:Each time the fan and heat sink are removed, the thermal material must be thoroughly cleaned
from the surfaces of the heat sink and system board components: heat sink (1), processor (2),
Northbridge clip (3), and capacitor (4). Thermal pads and thermal paste must be installed on all surfaces
before the fan and heat sink are reinstalled. Thermal pads and thermal paste are included with all fan,
heat sink, system board, and processor spare part kits.
116 Chapter 4   Removal and replacement procedures 
						

							Reverse this procedure to install the fan/heat sink assembly.
Component replacement procedures 117 
						

							Processor
DescriptionSpare part number
Processors (include thermal material)
AMD processors:
 
●Athlon QL-64 (2.1 GHz, 1-MB L2 cache)506053-001
●Turion 64 ZM-86 (2.4 GHz, 2-MB L2 cache)487345-005
●Turion 64, ZM-84 (2.3 GHz, 2-MB L2 cache)497177-001
●Turion 64 ZM-82 (2.2 GHz, 2-MB L2 cache)487346-005
●Turion 64 ZM-80 (2.1 GHz, 2-MB L2 cache)487347-005
●Turion 64 RM-74 (2.2-GHz, 1-MB L2 cache)507979-001
●Turion 64 RM-72 (2.1 GHz, 1-MB L2 cache)497178-001
●Turion 64 RM-70 (2.0 GHz, 1-MB L2 cache)487348-006
●Turion 64 QL-62 (2 .0 GHz, 1-MB L2 cache)497179-001
●Turion 64 QL-60 (1.9 GHz, 1-MB L2 cache)487349-006
●Sempron SI-42 (2.1 GHz, 512-KB L2 cache)497180-001
●Sempron SI-40 (2.0 GHz, 512-KB L2 cache)487350-004
Intel processors: 
●Core 2 Duo T9600 (2.80 GHz, 6-MB L2 cache)486727-001
●Core 2 Duo T9550 (2.66-GHz, 6-MB L2 cache)507953-001
●Core 2 Duo T9400 (2.53 GHz, 6-MB L2 cache)483260-001
●Core 2 Duo P8700 (2.53-GHz, 3-MB L2 cache)507960-001
●Core 2 Duo P8600 (2.40 GHz, 3-MB L2 cache)483259-001
●Core 2 Duo P8400 (2.26 GHz, 3-MB L2 cache)483258-001
●Core 2 Duo T6600 (2.2 GHz, 3-MB L2 cache)513593-001
●Core 2 Duo T6400 (2.06 GHz, 3-MB L2 cache)513592-001
●Core 2 Duo T5900 (2.2 GHz, 2-MB L2 cache)495639-001
●Core 2 Duo P7450 (2.13 GHz, 3-MB L2 cache)495640-001 or 507965-001
●Core 2 Duo P7350 (2.0 GHz, 3-MB L2 cache)491856-001
●Core 2 Duo T6600 (2.2 GHz, 3-MB L2 cache)513593-001
●Core 2 Duo T6400 (2.06 GHz, 3-MB L2 cache)513592-001
●Core 2 Duo T5800 (2.0 GHz, 2-MB L2 cache)495638-001
●Pentium Dual-Core T4200 (2.0-MHz, 4-MB L2 cache)513599-001
●Pentium Dual-Core T3400 (2.16 GHz, 1-MB L2 cache)504784-001
●Pentium Dual-Core T3200 (2.0 GHz, 1-MB L2 cache) 504783-001
118 Chapter 4   Removal and replacement procedures 
						

							DescriptionSpare part number
●Celeron 575 (2.2 GHz, 1-MB L2 cache)502838-001
●Celeron T1600 (1.66 GHz, 2-MB L2 cache) 497773-001
NOTE:All processor spare part kits include thermal material.
Before removing the processor, follow these steps:
1.Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the
computer on, and then shut it down through the operating system.
2.Disconnect all external devices connected to the computer.
3.Disconnect the power from the computer by first unplugging the power cord from the AC outlet and
then unplugging the AC adapter from the computer.
4.Remove the battery (see 
Battery on page 55).
5.Remove the following components:
a.Hard drive (see 
Hard drive on page 59)
b.Optical drive (see 
Optical drive on page 57)
c.Keyboard (see 
Keyboard on page 72)
d.Keyboard cover (see 
Keyboard cover on page 74)
e.Display assembly (see 
Display assembly on page 80)
f.Top cover (see 
Top cover on page 92)
g.System board (see 
System board on page 107)
h.Fan and heat sink (see 
Fan and heat sink on page 114)
Remove the processor:
1.Turn the processor locking screw (1) one-half turn counterclockwise until you hear a click.
Component replacement procedures 119 
						

							2.Lift the processor (2) straight up and remove it.
NOTE:The gold triangle (3) on the processor must be aligned with the triangle icon (4) embossed
on the processor socket when you install the processor.
Reverse this procedure to install the processor.
120 Chapter 4   Removal and replacement procedures 
						

							5 Setup Utility
WARNING!Only authorized technicians trained by HP must repair this equipment. All troubleshooting
and repair procedures are detailed to allow repair at only the subassembly or module level. Because of
the complexity of the individual boards and subassemblies, do not attempt to make repairs at the
component level or modify any printed wiring board. Improper repairs can create a safety hazard. Any
indication of component replacement or printed wiring board modification may void any warranty or
exchange allowances.
Starting the Setup Utility
The Setup Utility is a ROM-based information and customization utility that can be used even when your
Windows® operating system is not working.
NOTE:The fingerprint reader (select models only) cannot be used to access the Setup Utility.
The utility reports information about the computer and provides settings for startup, security, and other
preferences.
To start the Setup Utility:
Open the Setup Utility by turning on or restarting the computer. While the “Press the ESC key for
Startup Menu” message is displayed in the lower-left corner of the screen, press f10.
– or –
1.Open the Setup Utility by turning on or restarting the computer. While the “Press the ESC key for
Startup Menu” message is displayed in the lower-left corner of the screen, press esc.
2.When the Startup Menu is displayed, press f10.
Changing the language of the Setup Utility
The following procedure explains how to change the language of the Setup Utility. If the Setup Utility is
not already running, begin at step 1. If the Setup Utility is already running, begin at step 2.
1.Open the Setup Utility by turning on or restarting the computer. While the “Press the ESC key for
Startup Menu” message is displayed in the lower-left corner of the screen, press f10.
– or –
Open the Setup Utility by turning on or restarting the computer. While the “Press the ESC key for
Startup Menu” message is displayed in the lower-left corner of the screen, press esc. When the
Startup Menu is displayed, press f10.
2.Use the arrow keys to select System Configuration > Language, and then press enter.
Starting the Setup Utility 121 
						

							3.Use the arrow keys to select a language, and then press enter.
4.When a confirmation prompt with your language selected is displayed, press enter.
5.To save your change and exit the Setup Utility, use the arrow keys to select Exit > Exit Saving
Changes, and then press enter.
Your change goes into effect immediately.
Navigating and selecting in the Setup Utility
Because the Setup Utility is not Windows based, it does not support the TouchPad. Navigation and
selection are by keystroke.
●To choose a menu or a menu item, use the arrow keys.
●To choose an item in a list or to toggle a field, for example an Enable/Disable field, use either the
arrow keys or f5 or f6.
●To select an item, press enter.
●To close a text box or return to the menu display, press esc.
●To display additional navigation and selection information while the Setup Utility is open, press
f1.
Displaying system information
The following procedure explains how to display system information in the Setup Utility. If the Setup
Utility is not open, begin at step 1. If the Setup Utility is open, begin at step 2.
1.Open the Setup Utility by turning on or restarting the computer. While the “Press the ESC key for
Startup Menu” message is displayed in the lower-left corner of the screen, press f10.
– or –
Open the Setup Utility by turning on or restarting the computer. While the “Press the ESC key for
Startup Menu” message is displayed in the lower-left corner of the screen, press esc. When the
Startup Menu is displayed, press f10.
2.Select the Main menu. System information such as the system time and date, and identification
information about the computer is displayed.
3.To exit the Setup Utility without changing any settings, use the arrow keys to select Exit > Exit
Discarding Changes, and then press enter.
122 Chapter 5   Setup Utility